{"id":7105,"date":"2026-07-13T09:55:50","date_gmt":"2026-07-13T00:55:50","guid":{"rendered":"https:\/\/fastcoding.jp\/blog\/?p=7105"},"modified":"2026-07-13T09:55:58","modified_gmt":"2026-07-13T00:55:58","slug":"frontend-glossary-advanced","status":"publish","type":"post","link":"https:\/\/fastcoding.jp\/blog\/all\/html-css\/frontend-glossary-advanced\/","title":{"rendered":"\u3044\u307e\u3055\u3089\u805e\u3051\u306a\u3044\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u7528\u8a9e\u96c6 \u2500 \u73fe\u5834\u3067\u98db\u3073\u4ea4\u3046\u4e2d\u301c\u4e0a\u7d1a\u30ef\u30fc\u30c9\u3092\u3084\u3055\u3057\u304f\u89e3\u8aac"},"content":{"rendered":"<div class=\"the_content\">\n<p class=\"wp-block-paragraph\">\u304a\u306f\u3088\u3046\u3054\u3056\u3044\u307e\u3059\uff01\u682a\u5f0f\u4f1a\u793e\u30d5\u30a1\u30b9\u30c8\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306e\u50cd\u304f\u304a\u304b\u3093\u3067\u3059\u3002<\/p>\n\n\n\n<p 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class=\"wp-block-heading\">HTML\/CSS\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u95a2\u9023<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Container Queries<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u753b\u9762\u5168\u4f53\u306e\u5e45\u3067\u306f\u306a\u304f\u3001<strong>\u89aa\u8981\u7d20\u306e\u5e45<\/strong>\u306b\u5fdc\u3058\u3066\u30b9\u30bf\u30a4\u30eb\u3092\u5207\u308a\u66ff\u3048\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u5f93\u6765\u306e\u30e1\u30c7\u30a3\u30a2\u30af\u30a8\u30ea\u306f\u300c\u30d6\u30e9\u30a6\u30b6\u306e\u5e45\u304c\u4f55px\u4ee5\u4e0b\u306a\u3089\u301c\u300d\u3068\u3044\u3046\u6307\u5b9a\u3067\u3057\u305f\u304c\u3001Container Queries\u306f\u300c\u3053\u306e\u30ab\u30fc\u30c9\u306e\u5e45\u304c300px\u4ee5\u4e0b\u306a\u3089\u301c\u300d\u306e\u3088\u3046\u306b\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u5358\u4f4d\u3067\u5236\u5fa1\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u73fe\u5834\u3067\u306f\u3053\u3046\u4f7f\u3046\uff1a<\/strong> \u30b5\u30a4\u30c9\u30d0\u30fc\u306b\u3082\u30e1\u30a4\u30f3\u30a8\u30ea\u30a2\u306b\u3082\u7f6e\u3051\u308b\u30ab\u30fc\u30c9UI\u3092\u4f5c\u308b\u3068\u304d\u3001\u300cContainer Queries\u3067\u5bfe\u5fdc\u3067\u304d\u308b\u306e\u3067\u3001\u914d\u7f6e\u5834\u6240\u3054\u3068\u306bCSS\u66f8\u304d\u5206\u3051\u306a\u304f\u3066\u5927\u4e08\u592b\u3067\u3059\u300d\u3068\u30a8\u30f3\u30b8\u30cb\u30a2\u304c\u63d0\u6848\u3057\u3066\u304d\u305f\u308a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">CSS Nesting<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Sass\u3084Less\u3067\u66f8\u3044\u3066\u3044\u305f\u5165\u308c\u5b50\u69cb\u9020\u306e\u30b9\u30bf\u30a4\u30eb\u6307\u5b9a\u304c\u3001<strong>\u7d20\u306eCSS\u3060\u3051<\/strong>\u3067\u66f8\u3051\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u6a5f\u80fd\u3067\u3059\u3002<code>.card { .title { color: red; } }<\/code> \u306e\u3088\u3046\u306b\u3001\u30bb\u30ec\u30af\u30bf\u306e\u4e2d\u306b\u30bb\u30ec\u30af\u30bf\u3092\u66f8\u3051\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u73fe\u5834\u3067\u306f\u3053\u3046\u4f7f\u3046\uff1a<\/strong> \u300cSass\u306e\u30d3\u30eb\u30c9\u74b0\u5883\u306a\u3057\u3067\u958b\u767a\u3067\u304d\u308b\u306e\u3067\u3001Nesting\u5bfe\u5fdc\u306e\u30d6\u30e9\u30a6\u30b6\u3060\u3051\u306a\u3089\u3001\u30d3\u30eb\u30c9\u30c4\u30fc\u30eb\u306e\u5c0e\u5165\u30b3\u30b9\u30c8\u3092\u6e1b\u3089\u305b\u307e\u3059\u300d\u3068\u3044\u3046\u6587\u8108\u3067\u51fa\u3066\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Cascade Layers<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">CSS\u306e\u512a\u5148\u9806\u4f4d\uff08\u30ab\u30b9\u30b1\u30fc\u30c9\uff09\u3092\u3001<strong>\u30ec\u30a4\u30e4\u30fc\u3068\u3044\u3046\u5358\u4f4d\u3067\u660e\u793a\u7684\u306b\u5236\u5fa1\u3059\u308b<\/strong>\u4ed5\u7d44\u307f\u3067\u3059\u3002<code>@layer<\/code> 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class=\"wp-block-paragraph\">\u300c<strong>\u5b50\u8981\u7d20\u3084\u96a3\u63a5\u8981\u7d20\u306e\u72b6\u614b\u306b\u5fdc\u3058\u3066\u3001\u89aa\u8981\u7d20\u306e\u30b9\u30bf\u30a4\u30eb\u3092\u5909\u3048\u308b<\/strong>\u300d\u3053\u3068\u304c\u3067\u304d\u308bCSS\u30bb\u30ec\u30af\u30bf\u3067\u3059\u3002\u3053\u308c\u307e\u3067CSS\u3067\u306f\u300c\u89aa\u304b\u3089\u5b50\u300d\u3078\u306e\u6307\u5b9a\u3057\u304b\u3067\u304d\u306a\u304b\u3063\u305f\u306e\u304c\u3001\u9006\u65b9\u5411\u306e\u5236\u5fa1\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u73fe\u5834\u3067\u306f\u3053\u3046\u4f7f\u3046\uff1a<\/strong> \u30d5\u30a9\u30fc\u30e0\u3067\u30a8\u30e9\u30fc\u304c\u3042\u308b\u5165\u529b\u6b04\u306e\u89aa\u30d6\u30ed\u30c3\u30af\u5168\u4f53\u3092\u8d64\u304f\u3057\u305f\u3044\u3068\u304d\u3001\u300c<code>:has()<\/code>\u3092\u4f7f\u3048\u3070JavaScript\u306a\u3057\u3067\u3044\u3051\u307e\u3059\u300d\u3068\u8a00\u308f\u308c\u305f\u3089\u3001\u3053\u306e\u6a5f\u80fd\u306e\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Subgrid<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">CSS Grid\u306e\u30ec\u30a4\u30a2\u30a6\u30c8\u3067\u3001<strong>\u5b50\u8981\u7d20\u304c\u89aa\u306e\u30b0\u30ea\u30c3\u30c9\u7dda\u3092\u305d\u306e\u307e\u307e\u5f15\u304d\u7d99\u3050<\/strong>\u6a5f\u80fd\u3067\u3059\u3002\u30ab\u30fc\u30c9\u4e00\u89a7\u3067\u300c\u30bf\u30a4\u30c8\u30eb\u30fb\u753b\u50cf\u30fb\u8aac\u660e\u6587\u306e\u9ad8\u3055\u3092\u5168\u30ab\u30fc\u30c9\u3067\u63c3\u3048\u305f\u3044\u300d\u3068\u3044\u3046\u3068\u304d\u3001Subgrid\u3092\u4f7f\u3046\u3068\u81ea\u7136\u306b\u63c3\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u73fe\u5834\u3067\u306f\u3053\u3046\u4f7f\u3046\uff1a<\/strong> \u300c\u30ab\u30fc\u30c9\u5185\u306e\u8981\u7d20\u306e\u9ad8\u3055\u304c\u63c3\u308f\u306a\u3044\u300d\u554f\u984c\u306b\u5bfe\u3057\u3066\u3001\u300cSubgrid\u3067\u89aa\u306e\u30b0\u30ea\u30c3\u30c9\u30e9\u30a4\u30f3\u3092\u7d99\u627f\u3059\u308c\u3070\u3001JavaScript\u3067\u306e\u9ad8\u3055\u63c3\u3048\u304c\u4e0d\u8981\u306b\u306a\u308a\u307e\u3059\u300d\u3068\u3044\u3046\u63d0\u6848\u306b\u767b\u5834\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30fb\u6700\u9069\u5316<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Core Web Vitals<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Google\u304c\u5b9a\u3081\u305f<strong>Web\u30da\u30fc\u30b8\u306e\u30e6\u30fc\u30b6\u30fc\u4f53\u9a13\u3092\u6e2c\u308b3\u3064\u306e\u6307\u6a19<\/strong>\u3067\u3059\u3002\u30da\u30fc\u30b8\u306e\u8aad\u307f\u8fbc\u307f\u901f\u5ea6\uff08LCP\uff09\u3001\u64cd\u4f5c\u3078\u306e\u5fdc\u7b54\u6027\uff08INP\uff09\u3001\u8996\u899a\u7684\u306a\u5b89\u5b9a\u6027\uff08CLS\uff09\u306e3\u3064\u3067\u69cb\u6210\u3055\u308c\u307e\u3059\u3002SEO\u306b\u3082\u5f71\u97ff\u3059\u308b\u305f\u3081\u3001\u30c7\u30a3\u30ec\u30af\u30bf\u30fc\u306b\u3068\u3063\u3066\u3082\u7121\u8996\u3067\u304d\u306a\u3044\u6307\u6a19\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u73fe\u5834\u3067\u306f\u3053\u3046\u4f7f\u3046\uff1a<\/strong> \u300cCore Web Vitals\u306e\u30b9\u30b3\u30a2\u304c\u843d\u3061\u3066\u3044\u308b\u306e\u3067\u3001\u753b\u50cf\u306e\u6700\u9069\u5316\u3068INP\u306e\u6539\u5584\u3092\u512a\u5148\u3057\u307e\u3057\u3087\u3046\u300d\u3068\u3044\u3046\u5f62\u3067\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6539\u5584\u306e\u8b70\u8ad6\u306b\u51fa\u3066\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">INP<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30e6\u30fc\u30b6\u30fc\u304c\u30af\u30ea\u30c3\u30af\u3084\u30bf\u30c3\u30d7\u3092\u3057\u3066\u304b\u3089\u3001<strong>\u753b\u9762\u304c\u5b9f\u969b\u306b\u53cd\u5fdc\u3059\u308b\u307e\u3067\u306e\u6642\u9593<\/strong>\u3092\u6e2c\u308b\u6307\u6a19\u3067\u3059\u30022024\u5e74\u306bFID\uff08First Input Delay\uff09\u306b\u4ee3\u308f\u3063\u3066Core Web Vitals\u306e\u6b63\u5f0f\u6307\u6a19\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u30dc\u30bf\u30f3\u3092\u62bc\u3057\u3066\u304b\u3089\u53cd\u5fdc\u304c\u9045\u3044\u3068\u3001\u3053\u306e\u30b9\u30b3\u30a2\u304c\u60aa\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u73fe\u5834\u3067\u306f\u3053\u3046\u4f7f\u3046\uff1a<\/strong> \u300c\u30d5\u30a9\u30fc\u30e0\u9001\u4fe1\u30dc\u30bf\u30f3\u306eINP\u304c\u9045\u3044\u306e\u3067\u3001\u30af\u30ea\u30c3\u30af\u6642\u306e\u91cd\u3044\u51e6\u7406\u3092\u975e\u540c\u671f\u306b\u3057\u305f\u3044\u300d\u3068\u3044\u3046\u3088\u3046\u306a\u6539\u5584\u63d0\u6848\u3067\u4f7f\u308f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Critical Rendering Path<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d6\u30e9\u30a6\u30b6\u304cHTML\u3092\u53d7\u3051\u53d6\u3063\u3066\u304b\u3089<strong>\u6700\u521d\u306e\u753b\u9762\u3092\u63cf\u753b\u3059\u308b\u307e\u3067\u306b\u901a\u308b\u51e6\u7406\u306e\u6d41\u308c<\/strong>\u306e\u3053\u3068\u3067\u3059\u3002HTML\u89e3\u6790 \u2192 CSS\u89e3\u6790 \u2192 \u30ec\u30f3\u30c0\u30fc\u30c4\u30ea\u30fc\u69cb\u7bc9 \u2192 \u63cf\u753b\u3001\u3068\u3044\u3046\u4e00\u9023\u306e\u904e\u7a0b\u3092\u6307\u3057\u307e\u3059\u3002\u3053\u306e\u7d4c\u8def\u306b\u3042\u308b\u30ea\u30bd\u30fc\u30b9\u3092\u6700\u5c0f\u5316\u3059\u308b\u3053\u3068\u3067\u3001\u8868\u793a\u901f\u5ea6\u304c\u6539\u5584\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u73fe\u5834\u3067\u306f\u3053\u3046\u4f7f\u3046\uff1a<\/strong> \u300c\u30d5\u30a1\u30fc\u30b9\u30c8\u30d3\u30e5\u30fc\u306e\u8868\u793a\u304c\u9045\u3044\u306e\u3067\u3001\u30af\u30ea\u30c6\u30a3\u30ab\u30eb\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u30d1\u30b9\u3092\u898b\u76f4\u3057\u3066\u3001\u4e0d\u8981\u306aCSS\u3084JS\u306e\u30ed\u30fc\u30c9\u3092\u5f8c\u56de\u3057\u306b\u3057\u307e\u3057\u3087\u3046\u300d\u3068\u3044\u3046\u6539\u5584\u63d0\u6848\u306b\u51fa\u3066\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Tree Shaking<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">JavaScript\u306e\u30d0\u30f3\u30c9\u30eb\u6642\u306b\u3001<strong>\u5b9f\u969b\u306b\u306f\u4f7f\u308f\u308c\u3066\u3044\u306a\u3044\u30b3\u30fc\u30c9\u3092\u81ea\u52d5\u7684\u306b\u9664\u53bb\u3059\u308b<\/strong>\u4ed5\u7d44\u307f\u3067\u3059\u3002\u300c\u6728\u3092\u63fa\u3055\u3076\u3063\u3066\u67af\u308c\u8449\u3092\u843d\u3068\u3059\u300d\u3068\u3044\u3046\u30a4\u30e1\u30fc\u30b8\u304b\u3089\u540d\u4ed8\u3051\u3089\u308c\u307e\u3057\u305f\u3002\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u3092\u5c0f\u3055\u304f\u3057\u3066\u30da\u30fc\u30b8\u306e\u8aad\u307f\u8fbc\u307f\u3092\u901f\u304f\u3059\u308b\u52b9\u679c\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u73fe\u5834\u3067\u306f\u3053\u3046\u4f7f\u3046\uff1a<\/strong> \u300c\u3053\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3001\u5168\u6a5f\u80fd\u3092\u8aad\u307f\u8fbc\u3093\u3067\u3044\u308b\u306e\u3067\u30d0\u30f3\u30c9\u30eb\u30b5\u30a4\u30ba\u304c\u5927\u304d\u3044\u3067\u3059\u3002Tree Shaking\u304c\u52b9\u304f\u3088\u3046\u306bimport\u65b9\u6cd5\u3092\u5909\u3048\u307e\u3057\u3087\u3046\u300d\u3068\u30a8\u30f3\u30b8\u30cb\u30a2\u304c\u8a00\u3063\u3066\u3044\u305f\u3089\u3001\u3053\u306e\u6700\u9069\u5316\u306e\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u30a2\u30af\u30bb\u30b7\u30d3\u30ea\u30c6\u30a3<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">WAI-ARIA<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Web\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u30b9\u30af\u30ea\u30fc\u30f3\u30ea\u30fc\u30c0\u30fc\u306a\u3069\u306e\u652f\u63f4\u6280\u8853\u306b<strong>\u6b63\u3057\u304f\u4f1d\u3048\u308b\u305f\u3081\u306e\u5c5e\u6027\u30bb\u30c3\u30c8<\/strong>\u3067\u3059\u3002HTML\u3060\u3051\u3067\u306f\u4f1d\u3048\u304d\u308c\u306a\u3044\u300c\u3053\u306e\u30dc\u30bf\u30f3\u306f\u4eca\u958b\u3044\u3066\u3044\u308b\u72b6\u614b\u300d\u300c\u3053\u306e\u9818\u57df\u306f\u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3\u300d\u3068\u3044\u3063\u305f\u60c5\u5831\u3092\u3001<code>role<\/code> \u3084 <code>aria-*<\/code> \u5c5e\u6027\u3067\u88dc\u8db3\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u73fe\u5834\u3067\u306f\u3053\u3046\u4f7f\u3046\uff1a<\/strong> \u30a2\u30af\u30bb\u30b7\u30d3\u30ea\u30c6\u30a3\u5bfe\u5fdc\u306e\u8981\u4ef6\u304c\u51fa\u305f\u3068\u304d\u3001\u300c\u30bf\u30d6UI\u306b\u306fWAI-ARIA\u306e <code>role=\"tablist\"<\/code> \u3068 <code>aria-selected<\/code> \u3092\u4ed8\u3051\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u300d\u306e\u3088\u3046\u306b\u3001\u5177\u4f53\u7684\u306a\u5b9f\u88c5\u6307\u793a\u306b\u767b\u5834\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">WCAG 2.2<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Web\u30a2\u30af\u30bb\u30b7\u30d3\u30ea\u30c6\u30a3\u306e<strong>\u56fd\u969b\u7684\u306a\u57fa\u6e96<\/strong>\u3067\u3001W3C\u304c\u7b56\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002\u30ec\u30d9\u30ebA\u30fbAA\u30fbAAA\u306e3\u6bb5\u968e\u304c\u3042\u308a\u3001\u591a\u304f\u306e\u6848\u4ef6\u3067\u306f\u30ec\u30d9\u30ebAA\u3078\u306e\u6e96\u62e0\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u30022023\u5e74\u306b\u30d0\u30fc\u30b8\u30e7\u30f32.2\u304c\u52e7\u544a\u3055\u308c\u3001\u30c9\u30e9\u30c3\u30b0\u64cd\u4f5c\u306e\u4ee3\u66ff\u624b\u6bb5\u63d0\u4f9b\u306a\u3069\u306e\u65b0\u57fa\u6e96\u304c\u8ffd\u52a0\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u73fe\u5834\u3067\u306f\u3053\u3046\u4f7f\u3046\uff1a<\/strong> \u300c\u4eca\u56de\u306e\u6848\u4ef6\u306fWCAG 2.2\u306e\u30ec\u30d9\u30ebAA\u6e96\u62e0\u304c\u8981\u4ef6\u3067\u3059\u3002\u30b3\u30f3\u30c8\u30e9\u30b9\u30c8\u6bd4\u3084\u30d5\u30a9\u30fc\u30ab\u30b9\u8868\u793a\u306e\u57fa\u6e96\u3092\u6e80\u305f\u3057\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u300d\u3068\u3001\u8981\u4ef6\u5b9a\u7fa9\u3084\u691c\u53ce\u3067\u51fa\u3066\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">prefers-reduced-motion<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30e6\u30fc\u30b6\u30fc\u304c<strong>OS\u306e\u8a2d\u5b9a\u3067\u300c\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3092\u6e1b\u3089\u3059\u300d\u3092\u6709\u52b9\u306b\u3057\u3066\u3044\u308b<\/strong>\u304b\u3069\u3046\u304b\u3092\u691c\u77e5\u3059\u308bCSS\u30e1\u30c7\u30a3\u30a2\u7279\u6027\u3067\u3059\u3002\u524d\u5ead\u969c\u5bb3\u306e\u3042\u308b\u65b9\u3084\u3001\u52d5\u304d\u306e\u591a\u3044\u753b\u9762\u304c\u82e6\u624b\u306a\u65b9\u3078\u306e\u914d\u616e\u3068\u3057\u3066\u4f7f\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u73fe\u5834\u3067\u306f\u3053\u3046\u4f7f\u3046\uff1a<\/strong> \u300c\u6d3e\u624b\u306a\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3092\u5165\u308c\u308b\u306a\u3089\u3001<code>prefers-reduced-motion<\/code> \u3067\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3092\u30aa\u30d5\u306b\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u304a\u3044\u3066\u304f\u3060\u3055\u3044\u300d\u3068\u3044\u3046\u5f62\u3067\u3001\u30a2\u30af\u30bb\u30b7\u30d3\u30ea\u30c6\u30a3\u30ec\u30d3\u30e5\u30fc\u306e\u3068\u304d\u306b\u6307\u6458\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">focus-visible<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30ad\u30fc\u30dc\u30fc\u30c9\u64cd\u4f5c\u306e\u3068\u304d\u3060\u3051<strong>\u30d5\u30a9\u30fc\u30ab\u30b9\u30ea\u30f3\u30b0\uff08\u9752\u3044\u67a0\u7dda\uff09\u3092\u8868\u793a\u3059\u308b<\/strong>CSS\u306e\u64ec\u4f3c\u30af\u30e9\u30b9\u3067\u3059\u3002\u30de\u30a6\u30b9\u30af\u30ea\u30c3\u30af\u6642\u306b\u306f\u30d5\u30a9\u30fc\u30ab\u30b9\u30ea\u30f3\u30b0\u304c\u51fa\u305a\u3001Tab\u30ad\u30fc\u3067\u79fb\u52d5\u3057\u305f\u3068\u304d\u3060\u3051\u51fa\u308b\u306e\u3067\u3001\u30c7\u30b6\u30a4\u30f3\u3068\u30a2\u30af\u30bb\u30b7\u30d3\u30ea\u30c6\u30a3\u306e\u4e21\u7acb\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u73fe\u5834\u3067\u306f\u3053\u3046\u4f7f\u3046\uff1a<\/strong> \u300c\u30dc\u30bf\u30f3\u3092\u30af\u30ea\u30c3\u30af\u3057\u305f\u3068\u304d\u9752\u3044\u67a0\u304c\u51fa\u308b\u306e\u304c\u6c17\u306b\u306a\u308b\u300d\u3068\u3044\u3046\u30c7\u30b6\u30a4\u30ca\u30fc\u304b\u3089\u306e\u8981\u671b\u306b\u3001\u300c<code>:focus-visible<\/code> \u306b\u5909\u66f4\u3059\u308c\u3070\u3001\u30ad\u30fc\u30dc\u30fc\u30c9\u64cd\u4f5c\u6642\u3060\u3051\u8868\u793a\u3055\u308c\u308b\u3088\u3046\u306b\u3067\u304d\u307e\u3059\u300d\u3068\u8fd4\u7b54\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u30d3\u30eb\u30c9\u30fb\u958b\u767a\u74b0\u5883<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Vite<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d5\u30e9\u30f3\u30b9\u8a9e\u3067\u300c\u901f\u3044\u300d\u3092\u610f\u5473\u3059\u308b\u3001<strong>\u6b21\u4e16\u4ee3\u306e\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u30d3\u30eb\u30c9\u30c4\u30fc\u30eb<\/strong>\u3067\u3059\u3002\u958b\u767a\u6642\u306b\u306f\u30d6\u30e9\u30a6\u30b6\u306e\u30cd\u30a4\u30c6\u30a3\u30d6ES\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u4f7f\u3044\u3001\u672c\u756a\u30d3\u30eb\u30c9\u306b\u306fRollup\u3092\u4f7f\u3044\u307e\u3059\u3002webpack\u3068\u6bd4\u3079\u3066\u958b\u767a\u30b5\u30fc\u30d0\u30fc\u306e\u8d77\u52d5\u304c\u975e\u5e38\u306b\u901f\u3044\u306e\u304c\u7279\u5fb4\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u73fe\u5834\u3067\u306f\u3053\u3046\u4f7f\u3046\uff1a<\/strong> \u300c\u65b0\u898f\u6848\u4ef6\u306e\u30d3\u30eb\u30c9\u74b0\u5883\u306fVite\u3067\u69cb\u7bc9\u3057\u307e\u3059\u3002webpack\u3088\u308a\u8d77\u52d5\u304c\u901f\u3044\u306e\u3067\u3001\u958b\u767a\u52b9\u7387\u304c\u4e0a\u304c\u308a\u307e\u3059\u300d\u3068\u3001\u6280\u8853\u9078\u5b9a\u306e\u4f1a\u8a71\u3067\u51fa\u3066\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Module Federation<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u8907\u6570\u306e\u72ec\u7acb\u3057\u305f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u9593\u3067\u3001<strong>JavaScript\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u5b9f\u884c\u6642\u306b\u5171\u6709\u3059\u308b<\/strong>\u4ed5\u7d44\u307f\u3067\u3059\u3002\u5927\u898f\u6a21\u306a\u30b5\u30a4\u30c8\u3092\u30c1\u30fc\u30e0\u3054\u3068\u306b\u72ec\u7acb\u3057\u3066\u958b\u767a\u30fb\u30c7\u30d7\u30ed\u30a4\u3057\u3064\u3064\u3001\u4e00\u3064\u306e\u30b5\u30a4\u30c8\u3068\u3057\u3066\u7d71\u5408\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u73fe\u5834\u3067\u306f\u3053\u3046\u4f7f\u3046\uff1a<\/strong> \u30de\u30a4\u30af\u30ed\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u69cb\u6210\u306e\u6848\u4ef6\u3067\u3001\u300c\u30d8\u30c3\u30c0\u30fc\u3068\u30d5\u30c3\u30bf\u30fc\u306f\u5171\u901a\u30c1\u30fc\u30e0\u3001\u5546\u54c1\u4e00\u89a7\u306f\u5225\u30c1\u30fc\u30e0\u3067\u958b\u767a\u3057\u3066\u3001Module Federation\u3067\u7d50\u5408\u3057\u307e\u3059\u300d\u3068\u3044\u3046\u8a2d\u8a08\u65b9\u91dd\u306b\u767b\u5834\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">CSS-in-JS \u3068 Utility-first CSS<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b9\u30bf\u30a4\u30ea\u30f3\u30b0\u624b\u6cd5\u306e2\u5927\u6f6e\u6d41\u3067\u3059\u3002<strong>CSS-in-JS<\/strong>\u306fJavaScript\u306e\u4e2d\u306bCSS\u3092\u66f8\u304f\u624b\u6cd5\uff08styled-components\u306a\u3069\uff09\u3002<strong>Utility-first CSS<\/strong>\u306f\u3001<code>text-center<\/code> <code>p-4<\/code> \u306e\u3088\u3046\u306a\u5c0f\u3055\u306a\u30af\u30e9\u30b9\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u30b9\u30bf\u30a4\u30eb\u3092\u4f5c\u308b\u624b\u6cd5\uff08Tailwind CSS\u304c\u4ee3\u8868\uff09\u3002\u3069\u3061\u3089\u304c\u826f\u3044\u304b\u306f\u6848\u4ef6\u306e\u7279\u6027\u3067\u5224\u65ad\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u73fe\u5834\u3067\u306f\u3053\u3046\u4f7f\u3046\uff1a<\/strong> \u6280\u8853\u9078\u5b9a\u3067\u300c\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u6570\u304c\u591a\u3044\u6848\u4ef6\u306a\u306e\u3067CSS-in-JS\u304c\u7ba1\u7406\u3057\u3084\u3059\u3044\u300d\u300c\u9759\u7684\u30da\u30fc\u30b8\u4e2d\u5fc3\u306a\u3089Tailwind\u306e\u307b\u3046\u304c\u901f\u304f\u66f8\u3051\u308b\u300d\u3068\u3044\u3063\u305f\u6bd4\u8f03\u306b\u4f7f\u308f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Turbopack<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Next.js\u306e\u958b\u767a\u5143\u3067\u3042\u308bVercel\u304c\u958b\u767a\u3057\u3066\u3044\u308b\u3001<strong>Rust\u88fd\u306e\u9ad8\u901f\u30d0\u30f3\u30c9\u30e9\u30fc<\/strong>\u3067\u3059\u3002webpack\u306e\u5f8c\u7d99\u3068\u3057\u3066\u4f4d\u7f6e\u3065\u3051\u3089\u308c\u3066\u304a\u308a\u3001Next.js 15\u4ee5\u964d\u3067\u958b\u767a\u30b5\u30fc\u30d0\u30fc\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u3068\u3057\u3066\u63a1\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u5927\u898f\u6a21\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306e\u30d3\u30eb\u30c9\u901f\u5ea6\u6539\u5584\u304c\u671f\u5f85\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u73fe\u5834\u3067\u306f\u3053\u3046\u4f7f\u3046\uff1a<\/strong> Next.js\u306e\u6848\u4ef6\u3067\u300cTurbopack\u3092\u6709\u52b9\u306b\u3059\u308b\u3068\u958b\u767a\u30b5\u30fc\u30d0\u30fc\u306e\u8d77\u52d5\u304c\u901f\u304f\u306a\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u307e\u3060\u4e00\u90e8\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u304c\u975e\u5bfe\u5fdc\u306a\u306e\u3067\u4e8b\u524d\u78ba\u8a8d\u304c\u5fc5\u8981\u3067\u3059\u300d\u3068\u6848\u5185\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2026\u5e74\u6ce8\u76ee\u306e\u30d6\u30e9\u30a6\u30b6\u65b0\u6a5f\u80fd<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">View Transitions API<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30da\u30fc\u30b8\u9077\u79fb\u3084DOM\u5909\u66f4\u6642\u306b\u3001<strong>\u30d6\u30e9\u30a6\u30b6\u30cd\u30a4\u30c6\u30a3\u30d6\u3067\u30b9\u30e0\u30fc\u30ba\u306a\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u9077\u79fb<\/strong>\u3092\u5b9f\u73fe\u3059\u308bAPI\u3067\u3059\u3002\u3053\u308c\u307e\u3067JavaScript\u3067\u8907\u96d1\u306b\u5b9f\u88c5\u3057\u3066\u3044\u305f\u30da\u30fc\u30b8\u9593\u306e\u30d5\u30a7\u30fc\u30c9\u3084\u30b9\u30e9\u30a4\u30c9\u3092\u3001CSS\u3068API\u306e\u7d44\u307f\u5408\u308f\u305b\u3067\u7c21\u6f54\u306b\u66f8\u3051\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u73fe\u5834\u3067\u306f\u3053\u3046\u4f7f\u3046\uff1a<\/strong> \u300c\u30da\u30fc\u30b8\u9077\u79fb\u6642\u306b\u3075\u308f\u3063\u3068\u3057\u305f\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3092\u5165\u308c\u305f\u3044\u3067\u3059\u300d\u3068\u3044\u3046\u8981\u671b\u306b\u5bfe\u3057\u3066\u3001\u300cView Transitions API\u3067\u5bfe\u5fdc\u3067\u304d\u307e\u3059\u3002SPA\u3067\u3082MPA\u3067\u3082\u4f7f\u3048\u307e\u3059\u300d\u3068\u63d0\u6848\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Server Components<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">React 19\u3067\u6b63\u5f0f\u5c0e\u5165\u3055\u308c\u305f\u3001<strong>\u30b5\u30fc\u30d0\u30fc\u5074\u3060\u3051\u3067\u5b9f\u884c\u3055\u308c\u308b\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8<\/strong>\u3067\u3059\u3002\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30a2\u30af\u30bb\u30b9\u3084API\u30b3\u30fc\u30eb\u3092\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u5185\u3067\u76f4\u63a5\u66f8\u3051\u3066\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u9001\u308bJavaScript\u306e\u91cf\u304c\u6e1b\u308a\u307e\u3059\u3002Next.js\u306eApp Router\u3067\u6a19\u6e96\u7684\u306b\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u73fe\u5834\u3067\u306f\u3053\u3046\u4f7f\u3046\uff1a<\/strong> \u300c\u3053\u306e\u30da\u30fc\u30b8\u306fServer Components\u3067\u4f5c\u308b\u306e\u3067\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u9001\u308bJS\u304c\u6e1b\u3063\u3066\u30da\u30fc\u30b8\u304c\u8efd\u304f\u306a\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u30dc\u30bf\u30f3\u306e\u30af\u30ea\u30c3\u30af\u51e6\u7406\u306a\u3069\u5bfe\u8a71\u7684\u306a\u90e8\u5206\u306fClient Component\u306b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u300d\u3068\u8aac\u660e\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Partial Hydration<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b5\u30fc\u30d0\u30fc\u3067\u751f\u6210\u3057\u305fHTML\u306e\u3046\u3061\u3001<strong>\u5bfe\u8a71\u7684\u306a\u64cd\u4f5c\u304c\u5fc5\u8981\u306a\u90e8\u5206\u3060\u3051<\/strong>\u306bJavaScript\u3092\u5f8c\u304b\u3089\u9069\u7528\u3059\u308b\u624b\u6cd5\u3067\u3059\u3002\u30da\u30fc\u30b8\u5168\u4f53\u3092\u30cf\u30a4\u30c9\u30ec\u30fc\u30b7\u30e7\u30f3\uff08JS\u3067\u52d5\u304b\u305b\u308b\u72b6\u614b\u306b\u3059\u308b\u3053\u3068\uff09\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u5fc5\u8981\u306a\u7b87\u6240\u3060\u3051\u306b\u7d5e\u308b\u3053\u3068\u3067\u3001\u521d\u671f\u30ed\u30fc\u30c9\u3092\u9ad8\u901f\u5316\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u73fe\u5834\u3067\u306f\u3053\u3046\u4f7f\u3046\uff1a<\/strong> \u300c\u3053\u306e LP \u306f\u307b\u307c\u9759\u7684\u30b3\u30f3\u30c6\u30f3\u30c4\u306a\u306e\u3067\u3001Partial Hydration\u3067\u304a\u554f\u3044\u5408\u308f\u305b\u30d5\u30a9\u30fc\u30e0\u90e8\u5206\u3060\u3051\u306bJS\u3092\u9069\u7528\u3059\u308c\u3070\u3001\u8868\u793a\u901f\u5ea6\u304c\u304b\u306a\u308a\u6539\u5584\u3067\u304d\u307e\u3059\u300d\u3068\u3044\u3046\u63d0\u6848\u306b\u767b\u5834\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Scroll-driven Animations<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b9\u30af\u30ed\u30fc\u30eb\u4f4d\u7f6e\u306b\u9023\u52d5\u3057\u3066<strong>CSS\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3092\u5236\u5fa1\u3059\u308b<\/strong>\u4ed5\u7d44\u307f\u3067\u3059\u3002\u3053\u308c\u307e\u3067JavaScript\u306eScroll Event\u3067\u5b9f\u88c5\u3057\u3066\u3044\u305f\u30d1\u30e9\u30e9\u30c3\u30af\u30b9\u52b9\u679c\u3084\u3001\u30b9\u30af\u30ed\u30fc\u30eb\u9032\u6357\u30d0\u30fc\u306a\u3069\u3092\u3001CSS\u3060\u3051\u3067\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u73fe\u5834\u3067\u306f\u3053\u3046\u4f7f\u3046\uff1a<\/strong> \u300c\u30b9\u30af\u30ed\u30fc\u30eb\u306b\u5408\u308f\u305b\u3066\u30d5\u30a7\u30fc\u30c9\u30a4\u30f3\u3059\u308b\u6f14\u51fa\u3092\u5165\u308c\u305f\u3044\u306e\u3067\u3059\u304c\u300d\u300cScroll-driven Animations\u306a\u3089CSS\u3060\u3051\u3067\u3067\u304d\u308b\u306e\u3067\u3001JS\u306e\u30b9\u30af\u30ed\u30fc\u30eb\u30a4\u30d9\u30f3\u30c8\u76e3\u8996\u304c\u4e0d\u8981\u306b\u306a\u308a\u307e\u3059\u3002\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u7684\u306b\u3082\u6709\u5229\u3067\u3059\u300d\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Popover API<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">HTML\u30cd\u30a4\u30c6\u30a3\u30d6\u3067<strong>\u30dd\u30c3\u30d7\u30aa\u30fc\u30d0\u30fc\uff08\u5439\u304d\u51fa\u3057\u30fb\u30c4\u30fc\u30eb\u30c1\u30c3\u30d7\u7684\u306aUI\uff09<\/strong>\u3092\u4f5c\u308c\u308bAPI\u3067\u3059\u3002<code>popover<\/code> \u5c5e\u6027\u3068 <code>popovertarget<\/code> \u5c5e\u6027\u3060\u3051\u3067\u3001JavaScript\u306a\u3057\u3067\u3082\u958b\u9589\u306e\u5236\u5fa1\u304c\u3067\u304d\u307e\u3059\u3002z-index\u306e\u7ba1\u7406\u3084\u30d5\u30a9\u30fc\u30ab\u30b9\u30c8\u30e9\u30c3\u30d7\u3082\u81ea\u52d5\u3067\u51e6\u7406\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u73fe\u5834\u3067\u306f\u3053\u3046\u4f7f\u3046\uff1a<\/strong> \u300c\u30c4\u30fc\u30eb\u30c1\u30c3\u30d7\u3084\u30c9\u30ed\u30c3\u30d7\u30c0\u30a6\u30f3\u30e1\u30cb\u30e5\u30fc\u306e\u5b9f\u88c5\u306b\u3001Popover API\u3092\u4f7f\u3048\u3070JS\u30e9\u30a4\u30d6\u30e9\u30ea\u3078\u306e\u4f9d\u5b58\u3092\u6e1b\u3089\u305b\u307e\u3059\u3002\u30d6\u30e9\u30a6\u30b6\u6a19\u6e96\u306e\u6a5f\u80fd\u306a\u306e\u3067\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u3082\u697d\u3067\u3059\u300d\u3068\u63d0\u6848\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 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